采样对数值模拟光纤中光脉冲传输演化的影响  

Influence of sampling on numerical simulation of optical pulse evolution in fiber

作　　者：周小红[1] 王黎[1] 高晓蓉[1] 王泽勇[1] 罗斌[2] 

机构地区：[1]西南交通大学物理科学与技术学院,四川成都610031 [2]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《激光杂志》2010年第5期21-23,共3页Laser Journal

摘　　要：光脉冲在光纤中传输时,光纤的非线性效应和色散将会使其变形。在考虑了以上两种影响因素后,给出了利用分步傅立叶变换法正确模拟光脉冲在光纤中传输的采样间隔选取依据,模拟了在不同采样间隔下光纤输出端的光脉冲形状和频谱,由此讨论了采样间隔对数值模拟光纤中光脉冲传输演化的影响。数值模拟结果验证了采样间隔选取依据的正确性。The nonlinear effect and dispersion of fiber may modify profile and power spectrum of optical pulse when it propagates in fiber.After considering the influencing factors above,the basis for the selection of sampling interval to simulation correctly propagation of optical pulse in fiber using split-step Fourier transform method has been given.The profile and power spectrum of optical pulse on the output facet of fiber have been simulated under different sampling interval.From this,the influence of sampling interval on numerical simulation of optical pulse evolution in fiber has been discussed.The results of numerical simulation have verified the correctness of the basis for the selection of sampling interval.

关 键 词：采样间隔 数值模拟 光纤 光脉冲 

分 类 号：TN818[电子电信—信息与通信工程]